Hi, On 02/10/2019 11:47, Fabian Greffrath wrote: > Hi James, > > Am 02.10.2019 01:45, schrieb James Cowgill: >> Indeed readelf contains some non-executable program headers in >> 2:1.3.5-1+b1 which do not appear in 2:1.3.5-1 in buster. The >> ".rotext" section sounds suspicious. > > indeed, the check_cpu_feature() function is defined in > src/utils/x86_asm/cpuid.asm [1] which includes src/nasm.inc, which in > turn declares a .rotext section [2] for any other output format than > macho32 and macho64. > > It would probably be the best patch this to simply declare a .text > section for all output formats. The question remains, however, why this > is an issue now but not when xvidcore_2:1.3.5-1 was uploaded?
I had a play around and I think this is caused by the "-z separate-code" option being enabled by default in binutils >= 2.31. With that option binutils will put "text" and "rodata" into different segments. Previously it bundled both of those (along with any other read only data) into a single executable segment. Second bullet point in the announcement: https://sourceware.org/ml/binutils/2018-07/msg00213.html In theory that also means the bug affects buster if the package is ever rebuilt / updated there. James
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